Abstract: A sealant application includes an interface structure having an interface for interfacing with a source of sealant and a nozzle structure including a nozzle for dispensing sealant. A gear pump module including a gear pump is configured to be detachably connectable to each of the interface structure and the nozzle structure such that sealant provided at the interface is pumpable by the gear pump from the interface to the nozzle.

Abstract: A sealant smoothing tool for smoothing sealant in a gap between two aircraft parts is disclosed including a main body having a base surface for abutting sliding along a top surface of the aircraft parts, a spatula holder for holding a spatula, the spatula holder being configured to movably mount the spatula relative to the main body, and a resilient biasing member, configured to provide a biasing against the spatula or the spatula holder, such that the spatula supplies a biasing force to the sealant. An aircraft having two parts sealed by the sealant smoothing tool, a kit of parts including a sealant smoothing tool and one or more spatulas, and a method of smoothing sealant to seal a gap between two aircraft parts are also disclosed.

Abstract: A rib foot cleat for sealing around a stringer passing through a rib mouse hole in an aircraft assembly. The rib foot cleat has a body for attaching to a rib at a rib mouse hole and defines a cleat channel configured to be arranged over the stringer. The rib foot cleat also has an injection hole through the cleat body which is in fluid communication with the cleat channel, to allow sealant material to be injected through the injection hole in to the cleat channel for sealing around the stringer.